HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsTrout barb Trout barb (Raiamas bola) Scientific name: Raiamas bola Hamilton, 1822 The Trout barb (Raiamas bola) is a freshwater fish of the family Cyprinidae. Native range: Asia, India, Bangladesh, Myanmar and Nepal. Also recorded from Bhutan and Thailand. BiologyInhabits rivers and streams; does not have barbels but with a deep cleft in the mouth.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameRaiamas bolaFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length35.0EnvironmentFreshwater; demersal; potamodromousClimateTropicalDistributionAsia: India, Bangladesh, Myanmar and Nepal. Also recorded from Bhutan and Thailand.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026